Yes this does sound like a very cool idea.
A good place to start may be to run a DAC that allows players to play blackjack against the house (the DAC).
It would be a simpler way to start and then expand into other games.
A pool of shares can exist upon DAC creation to act as the house money pool for people who win against the house.
People would mine shares and use them to play. If the house reserves increase to a certain threshold above the initial pool value, the extra funds can be distributed among shareholders as profits.
And ya, I do enjoy a good game of poker